[Healeys] PCV valve

[Bob Spidell]

I put many miles--well over 100K--on my Nock PCV setup before upgrading. 
There was no sludge at all, and the head looked normal (I expected some 
carbon buildup on the rear cylinders).

On 4/27/2021 6:21 PM, Henry G Leach via Healeys wrote:
> This all sounds good, but I'm concerned about sludge build up...I 
> remember my '55 Ford with added rubber plug to the vent & adapted PCV 
> and takeoff on air cleaner. Under the rockers was a gooey mess after 
> some miles. I kinda like my Type 3 system as original on my BJ Healey 
> and the rocker shaft and rockers are clean not a sticky mess. Sure it 
> drips some oil from the bell, but don't all us oldies drip something? Hank
>
> -----------------------------------------
>
> From: "Roger Grace via Healeys"
> To: "Harold Manifold"
> Cc: "Healey List"
> Sent: Tuesday April 27 2021 4:34:02PM
> Subject: Re: [Healeys] PCV valve installation
>
> I am with Harold on this one. In theory, with substantial vacuum 
> holding in the CC you would not move any of the accumulated gasses and 
> moisture from the CC. Would be interested to hear if anyone has 
> actually measured the CC vacuum after the plugging and soldering of 
> all the orifices ? Particularly at idle when the vacuum is high - what 
> does the PCV valve regulate it to ? My car is about 17/18 ins Hg at 
> idle. Would also be interesting to look for oil at the system vacuum 
> inlet pipe after a few miles.
> Just wondering...
> rg
>
>
>
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>
> On Tue, Apr 27, 2021 at 8:42 AM Harold Manifold via Healeys 
> <healeys at autox.team.net> wrote:
>
>     The V in PCV is for ventilation. There should be a way for fresh
>     air to get into the engine. In addition to creating a slight
>     vacuum inside the engine ideally the blow by gases that accumulate
>     in the bottom of the block and contaminate the engine oil should
>     be replaced with clear air.
>
>     Foxbody PCV Valve Replacement – Fox Body Project
>
>     Harold
>
>     *From:* Bob Begani via Healeys
>     *Sent:* Tuesday, April 27, 2021 6:06 AM
>     *To:* Bob Haskell; Healey List
>     *Subject:* Re: [Healeys] PCV valve installation
>
>     Bob:
>
>     Let me know how your installation works with the hole in the oil
>     fill cap soldered.  No doubt, the rest of the engine is has no
>     breather inlets such as the valve cover? The reason I ask is I did
>     not solder or seal the oil fill cap and my aluminum valve cover
>     has  a vent on the side into which I stuffed a piece of oiled 3m
>     sanding pad.  The reason was that in the early days of PCV valves
>     on engines the car makers were creating a breather so fresh air
>     could circulate in the engine and some articles indicated it was
>     desirable to keep air flowing to the crankcase.
>
>     Maybe some of the other listeners who have been using a PVC system
>     sealed could comment on the operation.  Currently on regular
>     25-mile drives at no more than 60 mph the drips under the bell
>     housing weep hole after the ride are limited to a spot the size of
>     a quarter in the can underneath.  Next time travel on I-75 for 50
>     miles at higher speeds I will see if the amount of oil increases. 
>     If it does I may seal vent to see what happens.
>
>     Bob Begani
>
>

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